Improvement in pumps



A UNITED STATES PATENT OFFICE.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 35,465, dated June 3,1862.

vention taken in'the line .70 m, Fig. 2. Fig. 2

is a plan or top view of the same. Fig. 3 is a section of the same takenin the line y y, Fig.

2; Fig. 4, a detached perspective view of the socket which is placed onthe pump-handle.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in a check or retaining valve arrangedsubstantially as hereinafter fully shown and describedto admit of thewater escaping at the termination of the working of the pump in order toprevent difficulty from freezing.

The invention also consists in a novel way of attaching the handle ofthe pump to the plunger or piston shaft, as hereinafter described,whereby the relative positionof the handle with the plunger or pistonshaft may be regulated to suit the operator, as described.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents the body or chamber of the pump, whichis of sectorjorm inits transverse section, as shown clearly in Fig. 1, and may be of anysuitable or desired length. To the upper end of the body or chamber Athere is attached an eduction-pipe, B, and to the lower end there isattached an induction-pipe, G, the latter having a check or retainingwalve, D, over its orifice. This valve D may be of the usual flap kind,and it is within a chamber, E, atthe lower part of the bodyA of thepump, said chamber communicating with thebody A and having a cap, F,screwed on its outer end, by removing which the valve D may be renderedaccessible for repairs when neces-' sary, as will be seen by referringto Fig. 1.

The front part of the valve D is provided with a projection, a, whichextends a short distance within the body A of the pump and projects overa groove or channel, b, made longitudinally init, as also shown in Fig.1.

G is a shaft, which is fitted in the upper part of the body A of thepump at its angle which forms the center of the sweep of the curvedorfront side, a, of the same. This shaft G is provided with a radialflange, H, which forms the plunger or piston of the pump, and its outeredge works in contact with the inner surface, 0, while its sides work incontact with the innersurfaces of the ends d (1 of the body A. Theplunger or piston H is provided with a valve, I, of the ordinary flapkind, which opens upward, and a guard or stop, J, is attached to theplunger or piston to prevent the valve I opening beyond a certaindistance. The orifice or opening in the plunger or piston H is beveledat its lower side in order to form a V'shaped edge at the outer end ofthe plunger, as shown at a in Fig. 1. The shaft G extends through theends dd of the body A of the pump, and to one end of said shaft thehandle K is attached, as follows: Thehandie is provided at its inner endwith a circular loop or eye, 6, which fits snugly on the shaft G, and onthe handle there is placed loosely a collar, L, the outer end, f, ofwhich is of semicircular form, so as to fit against the shaft G.

This semicircular end f of the collar L is grooved, as shown at 9, sothat the back part of the eye 6 may fit into it, and the inner side ofthe eye e at its back part and the frontside of the collar L be flushwith each other, so that both may be in contact with shaft G. The faceor concave side of the end f of the collar L is provided at each side'ofthe groove 9 with projecting teeth h, which fit into notches i in theperiphery of the shaft G, and the teeth h are held in said notches bymeans of a nut, M, which works on a screw-thread, j, on the handle K.The teeth h, it will be seen, in consequence of fitting into the notchesi, prevent the eye 6 of handle K from turning on the shaft G, andby'slightly unscrewing the nut M, so thatthe teeth of the collar may bewithdrawn from the notches in the shaft, the position of the handle onthe shaft G may be varied, as desired.

The pump is operated by moving the handle K up and down, thereby givingmotion to the plunger or piston H. As said piston descends or movesdownward in the body A of the pump, the water within the latter passesthrough the plunger, its valve I opening, and as said piston rises thevalve I closes and the water in A is forced upward out from A andthrough the eduction-pipe B. \Vhen the piston H rises, the valve Dopens, a suction being produced below the piston, and the water passesup through the induction-pipe 0 into A, the valve D closing as thepiston descends. At the termination of the work the operator depressesor lowers the piston H sufiiciently to allow the V-shaped edge a of thepiston to pass underneath the projection a of valve D and raise saidvalve, the water in A thereby being allowed to escape through thechannel I) and pass down the induction-pipe 0. Thus by this simplearrangement the pump is prevented from freezing up in winter;

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. Having the piston H provided with a V- shaped edge, a at the outerpart of its valveseat when used in connection with the groove or channelb in the chamber A, and the projection a of the check-valve D arranged,as shown, to admit of the escape of water from the pump by thedepressing or forcing down of the piston, as and for the purpose hereinset forth.

2. Connecting or securing the handle K to the shaft G by means of theeye e, collar L, provided with the teeth 71, the notches i in shaft G,and the nut M, all arranged as shown, whereby the position of the handleK may be changed or varied on the shaft as circnm stances may require.

ALVAN MUNSON.

Witnesses:

JNo. H. STEELE, JOHN R. MILLER.

